High Sensitivity 21747-040-00 Bently Nevada 3300 XL 8mm Probe 4m Armor

The 21747-040-00 is a reverse-mount 8 mm proximity probe from the Bently Nevada 3300 XL series. When paired with a 3300 XL extension cable and driver, it provides:

• 2 mm (80 mil) linear range
• 7.87 V/mm (200 mV/mil) sensitivity
• 0…10 kHz frequency response for vibration, thrust, speed & Keyphasor
• 4 metre integral stainless-steel armor for crush, cut and chemical resistance

The 3/8-24 UNF-2A thread and long armor cable make this probe ideal for large gas turbines, centrifugal compressors, motors and pumps where the probe must reach through heavy casings or long brackets.

• 4 m armor covers long reaches without separate conduit
• API 670 compliant for critical turbomachinery protection
• Drop-in replacement for legacy 3300/7200 probes
• Triple hazardous certification for global projects
• Lifetime calibration--no re-cal needed with XL driver
• IP67 rated when mated, survives oil, steam, H₂S

• Gas & steam turbines - shaft vibration & phase
• Centrifugal compressors - thrust position
• Motors, generators - air-gap eccentricity
• Pumps, fans - bearing housing vibration
• High-speed balancing machines - Keyphasor reference

• 21747-040-00 probe
• Anti-static tube & end-cap
• NIST-traceable calibration certificate
• Mating 10-32 mini-coax connector
• Installation sheet